Nicki Minaj has blasted Steven Tyler for making a "racist comment" about her.

The 'Moment For Life' singer - who is a judge on the new season of 'American Idol' - posted a furious twitter rant aimed at the Aerosmith frontman, 64, after he slammed her feud with fellow new judge Mariah Carey and urged her to start focusing on nurturing the contestants like he did during his two seasons on the show's judging panel.

Steven previously said: "These kids, they just got out of a car from the Midwest somewhere and they're in New York City, they're scared to death; you're not going to get the best [out of them]. ... If it was Bob Dylan, Nicki Minaj would have had him sent to the cornfield! Whereas, if it was Bob Dylan with us, we would have brought the best of him out, as we did with (last year's 'American Idol' winner) Phillip Phillips. Just saying."

The 29-year-old rapper was not impressed with his comments and hit back in two long tweets Monday night.

She wrote: "Steven Tyler said I would have sent Bob Dylan to a cornfield??? Steven, you haven't seen me judge one single solitary contestant yet. I understand you really wanted to keep your job but take that up with the producers. I haven't done anything to you. That's a racist comment. You assume that I wouldn't have liked Bob Dylan??? why? black? rapper? what? go f**k yourself and worry about yourself babe."

She later wrote: "When Steven 1st went on Idol he was ridiculed by his peers & fans alike. Called a sell out. So what does he do? Ridicule the next judge."